CIEN Institutional Ownership

CIENA CORP

Latest close $417.01 as of Aug 5, 2026

Schedule 13G/13D reports beneficial ownership at an observation date. “Accumulation” or “reduction” is inferred from changes in reported shares when available; it is not a list of individual trades or exact execution prices. Form 13F rows are quarter-end holding context only and do not establish an exact entry date.

Free access includes current parsed ownership filings, reported share changes, and ownership-percentage changes. Filing-specific significance scoring, disclosure-speed analysis, confirmation/divergence signals, and signal alerts require Investor or Pro. The overall institutional consensus preview remains public. Compare plans.

Cross-institution intelligence

Institutional Research

Each institution is compared with its own prior filing, then the latest institution-level directions are compared for breadth.

Latest filing Apr 24, 2026

Public consensus preview Reduction leaning 36/100 institutional research score

3 tracked institutions Latest filing Apr 24, 2026

1 reducing across 1 comparable institution.

Accumulating0

Unchanged0

Reducing1

Exited0

The overall consensus is public. Detailed holder comparisons, breadth history, ownership charts, and filing-specific signal analysis remain part of Investor and Pro research.

Price context

52-week position is market context and does not change the institutional consensus score.

52-week low$49.21 52-week high$446.89

Latest close $417.01 92.5% through the range

Tracked institutions

Public holder names and filing freshness. Detailed institution-by-institution analysis is locked.

Latest observation Mar 31, 2026

JPMorgan Chase / Asset Management Jan 21, 2026 filed

BlackRock Legacy Jan 30, 2024 filed

BlackRock Apr 24, 2026 filed

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Beneficial ownership filing history

Showing 3 of 5 parsed filing(s) · 2 older require more history access

Holder	Observed / filed	Reported change	Shares	Ownership	Observation	Filing	Latest
BlackRock CIK0002012383	Mar 31, 2026 observed Apr 24, 2026 filed · 24d Schedule 13G amendment	Reported reduction	11.3M -3.3M	12.00% 0.00 pts	$388.23	$520.80	$417.01
JPMorgan Chase / Asset Management CIK0000019617	Dec 31, 2025 observed Jan 21, 2026 filed · 21d Initial Schedule 13G	Initial Schedule 13G	10.9M	12.00%	$233.87	$231.89	$417.01
BlackRock CIK0002012383	Nov 30, 2025 observed Dec 4, 2025 filed · 4d Schedule 13G amendment	Earliest Schedule 13G amendment found	14.5M	12.00%	$204.21	$195.73	$417.01

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